but how much of this good secular music should we take in? Is there a limit to this?
Some people - very few - are called to a life of contemplation. In theory, we could all approach that by giving up listening to music of any sort other than what might be termed “religious”; we could also give up listening to the news (as most of it has no real impact on our lives); we could forego any sort of entertainment; and the list goes on and one and on…
God calls us to honor and obey him, to use our talents for the good of others, to accept the crosses and sacrifices with equanimity, and to seek holiness.
But he does not call all of us to be Trappist monks or cloistered Dominican nuns.
Questions such as yours are good questions, but ultimately you need to make the determination.
I personally cannot stand the sound of a television in the background, and got rid of mine over 30 years ago; and I don’t know the latest local whatever; but my life does not seem empty because of it.
However, I do like background music and may have it on most of the time. And I probably have music from 10 or 15 different styles ans subsets of styles.
You need to spend some time in prayer daily; it would be very worthy to attend Adoration if it is available to you, and if you have a schedule which allows you to attend Mass during the week as well as Sunday, I would encourage it.
As to how much time you spend listening to music - paying direct attention or just in the background, is entirely up to you. You have other matters in your life which have a higher priority, and how music fits in with the rest is entirely your choice.